ISMA has created numerous subgroups on Facebook to help with virality of posts. They're bringing that to Twitter now.
They're not here to invite people into religion, they're here to empower the fundamentalists that already exist.
You'll find them condemning anyone who is not aligned with them and using the power of political religion to justify themselves.
To instigate their frustrations with Islam and further amplifying the voices of Islamic fundamentalists.
They won't listen, because their aim is not to understand or to dialogue, but to gain allies.
It turns into a vicious circle. There's no way out.
However, I am digressing.
How you choose to engage with them is absolutely up to you. I've personally given up on them a long time ago.